Contents. 1  Muscle hypertonicity: Causes. 2  Muscle hypertonicity: Introduction. 3  Muscle hypertonicity: Add a 2nd Symptom. 4  Muscle hypertonicity and Body symptoms (5 causes) 5  Muscle hypertonicity and Breathing difficulties (5 causes) 6  Muscle hypertonicity and Hyperactive deep tendon reflexes (5 causes)
What is ectropion? Ectropion is an abnormality of the eyelids in which the lower eyelid rolls outward or is everted. This causes the lower eyelids to appear droopy. Ectropion exposes the delicate conjunctival tissues that line the inner surface of the eyelids and cover the eyeball, causing drying of the tissues, resulting in conjunctivitis.
Definition of Entropion. Entropion is the inversion, or rolling inward, of all or part of the edge of an eyelid, which causes the hair-bearing part of the lid to come into contact with the outside of the eyeball. This creates friction, irritation and discomfort and can severely damage the eye. Entropion has a strong genetic component and often is present at birth due to a hereditary abnormality in the dogâs facial structure. It is much more common in breeds with flat faces, short muzzles and heavy facial skin folds. It can also be acquired as a result of trauma, inflammation or infection and from skin laxity associated with aging. Entropion usually â but not always-occurs in both eyes.